Design method of moment - strengthening on tension side when load un - removed 非卸载条件下受拉区加固梁的抗弯设计法
Debonding failure of beams combined strengthened with cfrp and steel plate 碳纤维布与钢板复合加固梁剥离破坏研究
Crack width . load - displacement . ultimate load and failure mode were measured and observed 试验中,对加固梁的挠度、裂缝宽度、极限荷载进行了量测。
Cfrp strengthening of concrete beams can fail when steel yield - concrete crushing and steel yield - cfrp tenside rupture Cfrp加固梁在承受弯曲荷载时的破坏是混凝土压碎、钢筋屈服、碳纤维未拉断。
By this program and experimental data , the author analyzes the strengthening theory and the cross - section ' s bending resistance capacity of strengthened beam 并利用此程序和试验数据对预应力加固梁及粘钢加固梁的加固原理和正截面应力状态进行了探讨。
Here we obtain concepts of fracture mechanincs , the required cfrp cross - sectional area to achieve a targeted resisting moment of rehabilitated flexureal element 本文通过对破坏机理的定义,在已知加固梁的极限弯曲强度时可以求出所需的cfrp材料横截面积。
Numerical simulation and calculation in theory are done for the beams strengthening with prestressed cfrp sheets in this paper base on the present experimental results 本文在参考目前预应力碳纤维布加固梁试验研究成果的基础上,对加固梁进行数值模拟和理论计算。
As a result , the fatigue life of intact reinforced beams increases by 60 % - 80 % . 4 . owing to many existing bridges to be reinforced exists different harm to some 5 、通过完好加固梁与损伤加固梁的对比试验,首次定量给出了梁的损伤对混凝土加固梁疲劳性能的影响。
Three of them are strengthened by external prestressing , two of them are strengthened by bonding steel plate , and the other one is reinforced concrete beam as contrast experiment beam 试验的六根梁中三根为预应力加固梁,二根为粘钢加固梁,另外一根为钢筋混凝土对比试验梁。
Parameters considered are : concrete compressive strength , percentage of flexural reinforcement , bonded length , thickness and stiffness of cfrp laminate and soon 这些参数包括:混凝土强度、配筋率、粘结长度、 crfp厚度及刚度等,在设计过程中正确选择参数可以避免加固梁发生脆性破坏。